When try to change a Delivery Address on a Project Invoice which is in Preliminary status , receive an error" Field(Tax Currency Rate Base) is mandatory for Project Invoice and requires a value".

IFSCLOUD / 23R1 Core / REGIONAL TEST LKP

Invoice no: 208398

Customer:1000

#Project invoice in Preliminary state, try to change the Delivery address, receives an error message.

“Field [Tax Currency Rate Base] is mandatory for project invoice and requires a value.”

Why this error appears when changing the Delivery address?  

#When I try to select back the old Delivery address and try to save, receives an error message. 

“Field [TaxsellcurrRateBase] is required and required a value.”

Why this error appears when changing the back the old Delivery address?

#When try to change the invoice address, it accepts the change and no error appear.

Can anyone help in this.